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MH handy sheet
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Just to help know the differences between MHs...
I hope it helps you understand differences between Ceramic and Quartz MH and Pulse start and Probe start...
The Probe Start has a Starting Resistor inside the lamp while Pulse Start doesn't.
The Quartz arc tube is made out of Quartz just like MV lamps has.....the Cermaic arc tube looks just like what a HPS arc tube has, except in different shape and has a different fill from the HPS, but same or similar as a Quartz MH lamp has.
There are many different base types of MHs!
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I hope both are rated for enclosed fixture.
(sorry this is messy, I'm posting on my iPod touch)
to start them. With pulse start almost every shrouded lamp has a blown
I prefer CMH lamps they seem very safe even if unshrouded
shroud at EOL
The ones I get that's blown was always the ones that were probe start!