Scuba_Dave
Member
Hi, I'm just a homeowner, I've been doing basic electrical work since I was a kid (my dad was an electrical engineer). I've run plenty of 15a & 20a circuits, 30a a/c, dryer, elecric stove, & a 50a GFI hot tub circuit at my old house (5 years never had a problem there)
"New" house with a 200a service & square D panel (not maxed out or even close). I'm running a 100a subpanel a little over 4' away. Thsi will eventually have a backup generator connected to it for emergency power. Anything wired to this will be able to be powered by the generator
I'm planning on the fridge outlet, some lights, the heating system, some outlets for my saltwater tanks...and?
But that's 2 years down the road after a garage/addition is added.
Immediate concern is the 100a subpanel & a spa pack (also 100a) that will be run.
100a subpanel is wired off of 200a panle with a 100a QO breaker. Wire being used is:
Colonial E14889J 1-AWG MTW or THHN or THWN (UL) or AWM or Gasolinme & Oil Resistant II VW-1 600v
I think they sold me heavier wire then I needed, which doesn't bother me, as long as that isn't a problem. From one chart on the Internet it said this is good for 211a (max)chassis wiring, 119a for transmission
The neutral & 2 hot leads will use this wire
The ground & neutral will be seperated
What size ground wire do I need? I've noticed that the existing ground wire is solid copper & much smaller then the hot leads/neutral. The 200a panel is grouned to the incoming water main, and to a grounding rod in teh basement floor
I'm going to be running the Spa pack off of the 100a subpanel via a 100a breaker
The Spa pack will have a 50a GFI breaker for the hot tub (main power use). It will also have (2) 20a breakers for outside outlets (GFI) and garden lights -very low powere use.
I've already run this by several people/sources, but I like to be thorough & have as much input as possible.
So (1) question is the size ground wire I need to run from the subpanel to the main panel
(2) question is the wire I need to run to the hot tub. I'm about 95% sure the last wire was #3, rated at 75a transmission. #4 is rated at 60a, I prefer to go one size heavier
Thank you for any feedback, suggestions
-Dave
"New" house with a 200a service & square D panel (not maxed out or even close). I'm running a 100a subpanel a little over 4' away. Thsi will eventually have a backup generator connected to it for emergency power. Anything wired to this will be able to be powered by the generator
I'm planning on the fridge outlet, some lights, the heating system, some outlets for my saltwater tanks...and?
But that's 2 years down the road after a garage/addition is added.
Immediate concern is the 100a subpanel & a spa pack (also 100a) that will be run.
100a subpanel is wired off of 200a panle with a 100a QO breaker. Wire being used is:
Colonial E14889J 1-AWG MTW or THHN or THWN (UL) or AWM or Gasolinme & Oil Resistant II VW-1 600v
I think they sold me heavier wire then I needed, which doesn't bother me, as long as that isn't a problem. From one chart on the Internet it said this is good for 211a (max)chassis wiring, 119a for transmission
The neutral & 2 hot leads will use this wire
The ground & neutral will be seperated
What size ground wire do I need? I've noticed that the existing ground wire is solid copper & much smaller then the hot leads/neutral. The 200a panel is grouned to the incoming water main, and to a grounding rod in teh basement floor
I'm going to be running the Spa pack off of the 100a subpanel via a 100a breaker
The Spa pack will have a 50a GFI breaker for the hot tub (main power use). It will also have (2) 20a breakers for outside outlets (GFI) and garden lights -very low powere use.
I've already run this by several people/sources, but I like to be thorough & have as much input as possible.
So (1) question is the size ground wire I need to run from the subpanel to the main panel
(2) question is the wire I need to run to the hot tub. I'm about 95% sure the last wire was #3, rated at 75a transmission. #4 is rated at 60a, I prefer to go one size heavier
Thank you for any feedback, suggestions
-Dave
