How to find the right HID Lamps AI guide
Written by an AI model from its trained knowledge.
What the AI looks for in HID Lamps
- ANSI ballast code
- Match the ANSI code on the lamp (M-codes for metal halide, S-codes for high pressure sodium, H-codes for mercury vapor) to the code on the ballast label. The same wattage in a different HID chemistry or start method will not run on the wrong ballast.
- Probe start vs pulse start
- Probe-start and pulse-start metal halide lamps are not interchangeable. Pulse-start lamps need an ignitor. This is the most common reason a new metal halide lamp fails to start.
- Open or enclosed fixture rating
- Use only shrouded, open-rated ('O') metal halide lamps in fixtures without a lens. Unrated lamps must be in enclosed fixtures. Metal halide arc tubes can rupture at end of life and throw hot glass.
- Burning position
- Match the rated position (universal, base-up or base-down, or horizontal) to how the fixture mounts the lamp. Running a lamp outside its rated position cuts output and life.
- Base
- Most high-wattage HID lamps use the mogul E39 base. Lower wattages may use medium E26 or double-ended bases. The wrong base will not fit the socket.
Brands that matter
- Venture Lighting: Metal halide specialist with clear ballast-matching data.
- Philips (Signify): Broad HID range including Ceramalux HPS and MasterColor ceramic metal halide.
- Sylvania / LEDVANCE: Metalarc and Lumalux HID lines.
- Eye Lighting (Iwasaki): Metal halide and horticulture HID lamps.
- Plusrite: Value-oriented HID replacements.
- Ushio: Specialty and horticultural HID lamps.
What to avoid
- Non-rated metal halide lamps in open fixtures.
- Buying by wattage without the ANSI code.
- LED corn bulbs in enclosed HID fixtures unless they are rated for enclosed use.
Questions
Why does my HID lamp take minutes to light again after a power blip?
HID lamps must cool before they can restrike. Several minutes of delay is normal and does not mean the lamp has failed.