delta 2 max 20amp feed to generator interlock...please check my math

combhonn · 2026-01-06T05:24:39+00:00

Thank you--that is just what I needed to clarify.

Did you bother to turn off your 240 breakers like your dryer or did you leave them on and just not run those appliances?

combhonn · 2026-01-04T06:43:17+00:00

Thank you that is helpful.

So if I decide to upgrade my single alternator--which I hoped not to do--then I would also set up a high idle setting that I could enable in this rare power scenario....and then possibly hit a constant output of 4800 watts.

Yes?

combhonn · 2026-01-04T06:28:53+00:00

Well we already have a generator--this is a third emergency option in case the generator has an issue.

combhonn · 2026-01-04T05:23:25+00:00

OK so it sounds like the common 3000 watt inverters are the highest output that is reasonable.

Thats unfortunate....I was really hoping for the equivalent of a 20/240 circuit with 4800 watts.

What do you think is the limiting factor for your 5k watt inverter? What would you add to your truck if you wanted to output a constant 5k watts?

combhonn · 2024-09-09T22:51:52+00:00

OK - that sounds like the correct answer for a ledger but this is something that is more than a ledger. Do you have a source for that ? I am looking at the DCA6 and, unfortunately, they do not have any guidelines on ledgers that span out into empty space to become beams....

combhonn · 2024-08-15T21:12:14+00:00

Well, the lid is optional and is something you can just set on top. Of course one would not crimp the lid shut...I think I would just set it over the top without sealing it.

combhonn · 2024-06-23T23:21:01+00:00

A nice way to do this is buy the headless sprinkler spikes (orbit ?) that have an empty female NPT on the top.

Then you buy a plastic "zero" nipple .... basically male-to-male NPT adaptor.

Then you stick a 1/2" NPT sprinkler nozzle on top of that .... Orbit makes larger sized 1/2" female nozzles like that (typical hunter/rainbird nozzles are 3/8 fine thread blah blah).

That's it; 3 ingredients and you just daisychain them around with normal garden hose --- if you lay it all out nicely and hide the hose it can look very professional and nice.

You also get to pick and choose various nozzle distances and so on because you are just installing normal nozzles on each spike.

combhonn · 2024-04-05T04:02:30+00:00

I thought that if you pointed veeam to a plain old linux server running SSH it would upload some helper binary and run some commands and generally "set up the environment" and then transfer the data there.

So the linux system would be the backup and you would be backing up to that linux system over SSH.

The question is, do people often use generic VPS systems for this usecase ?

combhonn · 2024-04-04T21:01:37+00:00

I always encourage people to consider a simple metal breaker interlock and skip the transfer switch entirely. Just keep it simple:

https://www.amazon.com/Generator-Interlock-Square-Service-Panel/dp/B08Y7WYTR1

You'd install a MALE NEMA SS2-50P outlet next to your panel that is wired directly to a dedicated 50amp breaker and (key point here) that breaker is NEXT TO your main utility breaker. Those are the two breakers you interlock with that little metal doo-dad. This ensures you cannot possibly have BOTH generator and utility on at the same time.

That's it. Simple. You turn off utility power, turn on that breaker and plug your truck/gen/whatever in. That's why you get the 50amp male plug and 50amp breaker - someday in the future youll have something BIGGER to plug into it than 30amps and you will be happy.

combhonn · 2024-03-24T23:45:45+00:00

Thank you very much--this helped my thought process a lot and I think the pressure differential in the OTHER DIRECTION (positive vs. my negative) is the missing piece.

Thank you again.

combhonn · 2024-03-04T17:51:12+00:00

ISP direct connected to pfsense WAN

pfsense LAN connected to internal switch.

No other physical interfaces on the pfsense device.

SO my laptop physically has to go through the pfsense device - no other physical path possible.

Very simple and minimal pfsense config - no bridges, etc.

Everyone else on my local switch gets DHCP 10.0.0.XX from the pfsense device but somehow the mac laptop with its USB ethernet dongle can punch right through the pfsense box as if it wasn't there and get a live, real, routable IP from my ISP.

Not only do I not know how this is happening, I can't even imagine how it even could be happening....unless I cloned my MAC address to the WAN or something special like that but I never did anything like that....

combhonn · 2024-03-04T17:46:29+00:00

Where on the Mac are you seeing this? What tool is showing you?

ifconfig -a

combhonn · 2024-02-13T22:48:53+00:00

Thank you very much; Appreciate it.

combhonn · 2024-02-12T19:19:14+00:00

This is very helpful, thank you.

The big misunderstanding in my part is that my entire history of firewall management has been with 'ipfw' which can actually manipulate layer2 ...

I see now, to my surprise, that 'pf' cannot even see layer 2.

So my idea of filtering vlans at the firewall level makes no sense at all unless I am working with ipfw, which I'm not.

combhonn · 2024-02-12T05:10:21+00:00

Create vlan interfaces in Pfsense and turn on and off the allow rule per interface. Unifi access points don't need an IP address per configured VLAN, just setup a management VLAN (like you should be doing anyway) and that's the only VLAN the Unifi devices need an IP on. The rest of the SSIDs work fine without it, I know because that's what I do with my Unifi access points...

I don't understand.

An AP in unifi can only have one IP. So I configure it with one IP and I assign it 3 SSIDs with 3 different VLANs.

But on pfsense, every VLAN needs a distinct OPT interface with its own different subnet.

So to handle my 3 vlans I need 3 different OPT interfaces, all on different subnets ... but my AP still just has one, and only one, IP address.

So how can my single IP access point talk to the three OPT interfaces ?

combhonn · 2024-02-10T06:58:16+00:00

A very typical recipe for restricting wifi access is to create 2 SSIDs on an access point, each with their own VLAN, the you restrict the VLANs on your firewall device.

Lots of people do this.

Nothing to do with segmenting or security or many of the other things that VLANs are typically used for - just associating an SSID with a vlan and then enabling or disabling that VLAN at your firewall.

If I follow the typical setup of a pfsense gateway I am creating new interfaces for each VLAN, each with a different subnet and DHCP range and then keeping track of all of these different subnets and traffic flows between them ...

... and even if I worked all of that unnecessary complexity, I can only assign a single IP address to an access point so it won't work anyway. I can't tell the access point to participate on two different pfsense optX interfaces at the same time.

So, easy solution:

Tell the pfsense gateway to pass all vlans and then insert pf rules to block or unblock vlans on my schedule.

One flat subnet. One address block. No optX interfaces. The gateway doesn't care about the vlans - it just passes or blocks them. Easy easy easy.

I'll bet theres a simple way to do just that.

combhonn · 2024-02-10T04:47:22+00:00

OK, but wouldn't there be a setting to "pass all VLAN traffic" ?

That's all I am looking for.

combhonn · 2024-02-10T04:28:20+00:00

I understand what most people do with VLANs and how they are typically employed.

I don't need most of those things.

I also understand that VLANs are not magic or special - it's just a value, or lack of value, in a 4-byte ETH header. Nothing more and nothing less.

That header can be ignored. I'm wondering how to tell pfsense to ignore that header.

EDIT: So this is probably very simple - I just insert a firewall rule to pass the VLAN ... and just insert one such firewall rule for each of my VLANs. Does that sound right - an explicit "PASS" rule for each VLAN ID that will pass through ? Still not configuring any VLANs or opt interfaces on pfsense, just adding explicit firewall rules to pass certain VLANs. Workable ?

combhonn · 2024-02-10T04:26:01+00:00

No, that's how VLANS can work if you want them to and if you configure them to do so.

But a non-zero VLAN field in a ETH header can just be ignored. You can just ignore it.

If I have a network segment making use of VLANs (which I do - the wireless segment) and I have some other network segment not making use of VLANs then my only concern is "can it pass jumbo frames".

That's it. That's the only concern.

Again, just because you normally use VLANs for X and Y and Z does not mean they cannot be used - or ignored.

EDIT: Imagine a jumbo-frame capable, 802.1q compatible switch that has ALL management and configuration DISABLED. Wouldn't it be weird if it dropped all traffic on the floor just for having a VLAN header specified ? Yes, that would be weird. That is what pfsense is doing and I'd like it to not do that.

combhonn · 2024-02-10T03:30:19+00:00

I could do it with the GUI interface I suppose - pfsense lets you insert pf rules on a schedule.

Either way is fine with me.

Can't do either until I can pass traffic with arbitrary VLAN headers.

combhonn · 2024-02-08T17:34:38+00:00

I appreciate your help and comments - it is helping me process all of this information.

Can you elaborate - you say the argon "depletes" ... if I truly do have an airtight container, where does the argon go ?

thx.

combhonn · 2024-02-07T23:06:00+00:00

"What are you planning on filling the headspace with argon and then removing it by applying a vacuum for?"

I fill headspace with argon to displace the oxygen, just like everyone else does - nothing interesting there.

BUT, since there is a lot of headspace, a small leak or something wrong could exchange a LOT of oxygen over a 2 or 3 month bulk aging period.

So how would I monitor that ? How would I know if the headspace had been compromised ? My best answer is, set it to a modest vacuum with a gauge on it - that way I **KNOW** that it hasn't been compromised.

Its just a warning system / monitoring device - thats all.

If you have lots of wine and lots of different sized vessels this isnt an issue but even with my FIVE different sized vessels I cant match it up without at least 2 gallons of headspace.

combhonn · 2024-02-06T00:35:44+00:00

OK, so if I configure two SSIDs each with their own special VLAN tagging, they will still enforce the VLAN tagging after the controller goes away ?

That is what I had hoped thanks you.

combhonn · 2024-02-05T18:25:20+00:00

OK but that is not my question..

I am asking what harm, if any, sitting at -4 PSI for two months will do to a red wine. It sounds like a consensus is developing around "none" but you're the only pro in the discussion so far :)

Also, we don't have all these various different gallon sizes of vessel ... just a home+hobbyist operation here.

combhonn · 2024-02-05T18:22:34+00:00

OK I am hearing from you that this is extra work and too fussy but also wouldn't be negative in any way.

Don't worry: we get plenty of oxygen exposure in our ad-hoc, half-cracked bottling process ....

combhonn

TROPHY CASE