- Nov 26, 2006
- 7,628
- Boat Info
- 2008 44 Sedan Bridge
- Engines
- Cummins QSC-500's
Straight Drives
Do you have Chinese Dry Wall? Google it.
Bulbs keep blowing in my house!
- Thread starter LmannyR
- Start date
- Nov 12, 2006
- 5,334
- Boat Info
- 1999 Sea Ray 330DA
Twin 7.4 MPI (310 propshaft HP) V-drives
- Engines
- Twin Mercury Marine marinized 7.4L L-29 V8s
Cast iron block w 4-bolt mains
I have a very nice HP 941A DVM which has a setting that measures the voltage and records max, min, and average voltage, plus when the max and min occurred. Get yourself a decent DVM, connect it to either an outlet on the affected circuit or at the mains and see if you have a voltage problem.
The other suspect could be a reverse EMF spike from an inductive load. When a very large electric motor is powered off, the magnetic field in the windings can induce a very brief but substantial surge which might be the root of your problem.
That Lutron system is really nice. But gawd awfully pricy. Something like $50 to 100 grand installed? Pretty sure that the incandescent loads are controlled by dual ended SCRs which can be driven into cut-off or saturation without ill-effect. Since they're basically gated silicone rectifiers, you do get the typical 0.7 volt forward biased voltage drop.
Sure wish wingy is still here. The man was an expert on this stuff!
Best regards,
Frank
The other suspect could be a reverse EMF spike from an inductive load. When a very large electric motor is powered off, the magnetic field in the windings can induce a very brief but substantial surge which might be the root of your problem.
That Lutron system is really nice. But gawd awfully pricy. Something like $50 to 100 grand installed? Pretty sure that the incandescent loads are controlled by dual ended SCRs which can be driven into cut-off or saturation without ill-effect. Since they're basically gated silicone rectifiers, you do get the typical 0.7 volt forward biased voltage drop.
Sure wish wingy is still here. The man was an expert on this stuff!
Best regards,
Frank
Last edited:
