200 amp panel board for a hot tub? WOW! Usually this size panel board can run an entire house.
1. Make sure the 200a PB is fed properly. Minimum #3/0 feeders and neutral. And, most importantly, a MINIMUM of #4 ground back to source where this sub panel is fed.
If, in fact this is a sub panel... I'm guessing it is, the ground and neutral must be isolated from each other. And tell your electrician to check your main bonding and main ground at your source... make sure they are properly installed and have little resistance to ground. If the electrician seems confused... get a different electrician.
2. Most likely, the install will be with #12 romex. If the panel is more than 100' away use #10 for voltage drop. The boxes in residential are usually plastic or fiberglass attached to wood studs. If you are dealing with wood studs and non-metallic boxes... you have no need for isolated grounding.
3. If you are using fluorescent bulbs in your home, do not feed them from this panel! If possible, throw them all in the trash.
4. Isolation transformers are an extreme measure, especially since you already have some isolation with a sub panel. Transformers buzz and vibrate... eventually.
5. You can attach a surge suppressor to the panel.
6. Good quality hospital grade receptacles are adequate. Your electrician can get these for you.
7. Multiple paths to ground are BAD! Make sure the electrician understands this theory. Get the project inspected by the local authorities... talk to the inspector while onsite. Ask the inspector to check grounding. Grounding is the most important item in electrical... along with everything thing else...;)
I am a licenced electrician with 27 years experience, 5 years apprentiship.
I have been Supervision for the last 20... I have overseen Major projects such as Hospitals, Waste Treatment, Manufacturing and now Coal Burning Power House Installations. But, I started in residential.
Most importatantly... a practicing audiophile.
Best of luck with your project,
Greg
1. Make sure the 200a PB is fed properly. Minimum #3/0 feeders and neutral. And, most importantly, a MINIMUM of #4 ground back to source where this sub panel is fed.
If, in fact this is a sub panel... I'm guessing it is, the ground and neutral must be isolated from each other. And tell your electrician to check your main bonding and main ground at your source... make sure they are properly installed and have little resistance to ground. If the electrician seems confused... get a different electrician.
2. Most likely, the install will be with #12 romex. If the panel is more than 100' away use #10 for voltage drop. The boxes in residential are usually plastic or fiberglass attached to wood studs. If you are dealing with wood studs and non-metallic boxes... you have no need for isolated grounding.
3. If you are using fluorescent bulbs in your home, do not feed them from this panel! If possible, throw them all in the trash.
4. Isolation transformers are an extreme measure, especially since you already have some isolation with a sub panel. Transformers buzz and vibrate... eventually.
5. You can attach a surge suppressor to the panel.
6. Good quality hospital grade receptacles are adequate. Your electrician can get these for you.
7. Multiple paths to ground are BAD! Make sure the electrician understands this theory. Get the project inspected by the local authorities... talk to the inspector while onsite. Ask the inspector to check grounding. Grounding is the most important item in electrical... along with everything thing else...;)
I am a licenced electrician with 27 years experience, 5 years apprentiship.
I have been Supervision for the last 20... I have overseen Major projects such as Hospitals, Waste Treatment, Manufacturing and now Coal Burning Power House Installations. But, I started in residential.
Most importatantly... a practicing audiophile.
Best of luck with your project,
Greg