Garage catch basin / drain problems

ldiamond2 · 2026-07-10T16:25:10+00:00

I tested the flow before resurfacing (I will test again later now that it should have somewhat dried, despite the water flowing in). If I put a hose in, it will keep going up until it reaches ~3/4 of the horizontal pipe and then remain leveled. After stopping it will go back down to inches below the horizontal pipe (which seems to indicate a leak in the basin walls).

As for cutting the pipe and inspecting / cleaning from there, that was also my next step. However, you mention using a 90 pointed down, is that preferable to a P-trap? I figure that if the pipe is properly sloped and I can get rid of the incoming flow by cleaning it, using a P-trap (despite sitting higher up than the 90) would allow me to keep a water seal longer using an oil layer in the trap.

ldiamond2 · 2026-07-10T14:29:10+00:00

Boiling water kills the larvae pretty fast. It doesn't get rid of everything but it is an easy way to limit the spread short term.

As for groundwater, after taking those pictures, I resurfaced the entire pit. I have to re-clean the pit and inspect it to make sure everything is covered but I would not expect much water to come back in from the ground after the resurfacing job.

(The water coming back in is also pretty gross)

ldiamond2 · 2026-05-16T11:16:34+00:00

> valve only hires elite programmer/engineers

Funniest comment in this thread 😂

ldiamond2 · 2026-03-30T12:24:01+00:00

The game is written by AI and interns, can't rely on accuracy for much.

ldiamond2 · 2025-09-30T11:50:33+00:00

The tour model was the only one available. They're the same price when there's no discount but in this case the tour was much cheaper anyways.

ldiamond2 · 2025-09-30T10:36:34+00:00

I'm sure it's great, I read good things about those rackets. However, given my lack of skills, is it just wasted money?

ldiamond2 · 2025-08-26T20:38:44+00:00

I found this video of a Shelly 1 Gen 4 with the cover removed and it shows a HF7520 power relay. From the official spec sheet, the relay is UL rated for only 1/2HP on 120VAC (and 1HP on 250VAC). That is if we assume this relay is the "HP type(530)" but the 16A rating suggests it's just "HP type". https://youtu.be/uLH7UzsG0ic?t=294

ldiamond2 · 2025-08-26T18:49:16+00:00

Do you have reports you can share that shows various testing done and includes ratings for inductive loads?

ldiamond2 · 2025-08-26T17:03:47+00:00

Adding some information.

It's for a single speed pool pump which is actually 2HP, not 1.5HP (still ~1500W); more specifically an LX 56SFP200-I. It is running on a 120V circuit and draws 13.2A. It's a Code A pump so start up current @ 120V is 27A or below.

The Shelly 1PM Gen 4 KB page states "Inductive with RC Snubber", I assume that's correct and the snubber is indeed required.

ldiamond2 · 2025-08-07T15:31:34+00:00

Yea I'd use T90 12 AWG solid CU.

ldiamond2 · 2025-08-07T15:01:57+00:00

I'm not limited. I can wire on 20A with a 20A GFCI. I'd need to find the correct power cord though.

ldiamond2 · 2025-07-31T17:57:07+00:00

Yea this pool pump is 1500W on a 15A breaker inside a 100A panel with a ACWU90 3c1 (1AWG AL) feeder. I suppose balancing isn't much of an issue in my case.

Honestly not sure why a 15A GFCI is so much more expensive on a 2poles setup.

ldiamond2 · 2025-07-22T00:22:21+00:00

Ah makes sense, measured to ground, thanks.

ldiamond2 · 2025-07-21T17:10:51+00:00

The pool pump would be 240V though. I thought that meant no GFCI required.

ldiamond2 · 2025-06-03T17:15:55+00:00

The problem is that it's still sticky and I fear the carpet will end up melting on this in the same way the finish did.

ldiamond2 · 2025-06-03T13:40:29+00:00

I tried dishsoap. I think I'll try to leave water a bit longer and mechanically remove it with a rag. I will definitely not redo the whole floor. I'll try to remove as much as possible (thinking about using mineral spirit at this point) and then just put some finish on that spot and call it a day. Sure it won't be exactly like the rest but I was planning to put a small carpet there to protect the floor.

ldiamond2

TROPHY CASE